Push the boot onto the steering gear housing and position - AR46.40-P-0400-02CW

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MODEL 164, 171, 172, 203, 204, 207, 209, 211, 212, 218, 219, 251

Shown on steering gear, model 204

Fig 1: Steering Gear Housing And Boot - Shown On Model 204

Courtesy of MERCEDES-BENZ USA

Push boot (1) onto steering gear housing (2).
Model 172, 204, 207, 212, 218: Slide on until the recesses (1a) are at the housing (2) of the steering gear.
Position boot (1).
Model 204, 207 with diaphragm valve (1b):

As shown in the picture the diaphragm valve (1b) must be located in the center of the marking (2m).

Model 164, 171, 203, 209, 251:

The diaphragm valve (1b) must point in the direction of travel.

Model 211, 219:

The diaphragm valve (1b) must point opposite to the direction of travel.

Model 172:

The diaphragm valve (1b) on the right boot (1) must point opposite to the direction of travel.